Physics, 28.01.2020 01:31 andydiaz1227
Q1. an amplifier operating from ± 3 v supplies provides a 2.2 v peak sine wave across a 100 ω load when provided with a 0.2 v peak input from which 1.0 ma peak is drawn. the average current in each supply is measured to be 20 ma. find the voltage gain, current gain and power gain as ratios and in decibels. (10 points) q 2. the input and output voltages of an amplifier are v i = 5 sin ( 1000 π t + 30 ∘ )mv and v o = 400 sin ( 1000 π t + 90 ∘ )mv. find the magnitude and phase of the voltage gain of the amplifier. (10 points)
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Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =
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Q1. an amplifier operating from ± 3 v supplies provides a 2.2 v peak sine wave across a 100 ω load w...
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